LG G7 & G7 Plus are identically very same devices. And the only difference they have is RAM and internal storage.
If you check the specifications of both models - both are having everything in common except the above two specs.
In fact, 6GB RAM is quite more than your regular usage even if you are heavy on your phone. We recommend buying LG G7.
Yes, LG G7 does have the portrait mode.
LG G7 has a display resolution of 1440 x 3,120 resulting into 564 PPI.
Yes, LG G7 does have the gorilla glass protection at both sides of the phone, front & rear.
Yes, LG has added voice recognition in LG G7 Plus. This is actually a combination of a new chipset, a few mics and Google's AI. The G7 Plus can recognize your voice from up to 5 meters distance even in a noisy of surrounding and can launch Google Assitant in an instant.
There are so many little things done right in the G7, but it's up to you to discover them as our review is about to end. If you can live with the small setbacks the still camera has, then you most definitely have to try the G7 for a size.